Richard Riemerschmid (20 June 1868 – 13 April 1957) was a
German architect and city planner from Munich,he trained as a
painter and was a major figure in Art Nouveau in Germany, and a member of the Deutscher Werkbund .As founder and principal of United Workshops for Art in Craftwork in Munich (est 1897),he
was happy to create furnishings for special commission that would
be largely be executed by hand,yet his simple rational designs
were well suited to machine production.He also designed for Dresden
Workshop of Arts & Crafts (est 1898) .He was Director of the
Munich Kunstgewerbeschule 1913-1924. I believe the last photo is of
a temporary exhibition space designed and built by Riemerschmid.